[Bug 644632] Re: nssldap-update-ignoreusers needs to be configurable to ignore users

[Jamie Strandboge]

So in talking with Scott on irc, he brought up an important point-- it
is undesirable to add the additional nss_initgroups_okusers option if
upstream actually implements
nss_initgroups_ignoreusers/nss_initgroups_minimum_uid in nss-ldap proper
(see upstream bug http://bugzilla.padl.com/show_bug.cgi?id=341). I think
the best course of action is for people interested in fixing this bug to
comment in the upstream bug about how
nss_initgroups_ignoreusers/nss_initgroups_minimum_uid isn't always
enough, and there should be some sort of whitelist. At that point we can
evaluate the best way to move forward (and have a blessed config
option).

If they NAK it, we could theoretically still implement this feature in
nssldap-update-ignoreusers, with the understanding that nssldap-update-
ignoreusers would have to be updated when upstream implements
nss_initgroups_ignoreusers/nss_initgroups_minimum_uid and only remove
users in nss_initgroups_okusers from nss_initgroups_ignoreusers rather
than trying to generate nss_initgroups_ignoreusers on the fly each time.

** Changed in: libnss-ldap (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/644632

Title:
  nssldap-update-ignoreusers needs to be configurable to ignore users

Status in “libnss-ldap” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: libnss-ldap

  # lsb_release -rd
  Description:    Ubuntu 10.04.1 LTS
  Release:        10.04

  # apt-cache policy libnss-ldap
  libnss-ldap:
    Installed: 264-2ubuntu2
    Candidate: 264-2ubuntu2
    Version table:
   *** 264-2ubuntu2 0
          500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages
          100 /var/lib/dpkg/status
       261-2.1ubuntu1 0
          500 http://us.archive.ubuntu.com/ubuntu/ jaunty/main Packages

  Currently, nssldap-update-ignoreusers can only be configured to ignore
  users over a certain numeric UID.  It blindly includes all users less
  than the configured UID.  However, this breaks our setup.  We have
  some system users (namely www-data and www-priv) that are in groups in
  LDAP.  Thus, when you query the 'Subversion' group, you get back a
  list that includes www-priv.  However, if you try to query the groups
  to which www-priv belongs, it fails to return the correct groups
  because it ignores www-priv, thus breaking privileges because the
  system then thinks www-priv is not in the Subversion group.

  The only work around for now is to disable the run of nssldap-update-
  ignoreusers.

  I would work on a patch to facilitate configuring users to *not*
  include in the ignore list if someone will commit to getting the patch
  accepted: we don't really want to maintain our own branch of one file
  in a package. :)